https://doi.org/10.1140/epja/s10050-023-01031-6
Regular Article - Experimental Physics
Lifetime measurement of the 
, 
states in semi-magic 
Ni
Institute for Nuclear Physics, University of Cologne, Zülpicher Str. 77, 50937, Cologne, Germany
Received:
1
February
2023
Accepted:
13
May
2023
Published online:
12
June
2023
A 
- coincidence Recoil Distance Doppler-Shift measurement has been carried out on Ni to re-measure the lifetime of the and states. The new lifetime of the state supports the adopted NNDC value but disagrees with the results of two more recent Doppler-Shift Attenuation Method measurements, which suggested a longer lifetime. The new result for the state’s lifetime is significantly shorter than the one recommended in the latest NNDC compilation while also reducing its uncertainty. It therefore resolves an unclear situation, where an unexpected drop in transition strength appeared from 
Ni to Ni. Both values match very well with recently applied shell model calculations using the GXPF1A interaction.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
